Lots of buzz about the Neo.
Possibly some have missed the point of it and expected too much. IE it isn't (and was not meant to be...) a winter mat, so not for the one tool for all jobs kind of people.
As for the OP, it sounds like to me that he would be the right candidate for the Neo.
Having used several mats, the Neo seems to me to perform to specification. I only went down to about 39f with it but it was still "warm" then.
Similar in warmth to my Insulmat Max Thermo, but a lot more comfortable. The rectangular shape and cross sections work for me.
My two companion also bought one after me, they also liked it. None of us had any issues with the reported "noise" and we all liked the weight/packed size for comfort warmth ratio.
In comfort the closest I have is the Exped Downmat 7, but of course it is 3 times heavier and 4 times bigger(when stored)
Franco